Blade chopper



April 15, 1947. H STQCK 2,418,958

I BLADE cHoPPER Filed Feb. 5, 1945 26 l BY Patented Apr. 15, 1947 UNI TED STAT PAT ENT OFF Y BLADE enormenv Herman. Stock, New:V Ynrk,N..Y'..ApplicatienFebruary 5, 1945, Serial No: 576,165.31V

rIrhis invention relates generally to cutting or severing: devicesYand.. more" particularlya1 device especially: adapted. forthe severing:or. cutting of. a; safety razor blade; of the double; edgev type: It.yisknowni tov diagonally bisect a. double edge razor. blade for the.purpose: ofV producing. two separate; cutting elements eachhaving al.single cutting.' edge. and such; cutting: elements: are'. especiallyusefulifo'r fine.-operation's'. Such cutting elements may', for'vexample, be usedr in' conjunc tion with the. furrier'sf knife`disclosed. in my Patent No..2,3l3;598grantedMarch` 9, 1943;

Sincev thev blades*` are?` relatively thin.- and'y are of: course.inexpensive, it is` desirable tl'iatiltheyy may be? formed in: ai.rapid" and convenientmanu ner and. it. is among thea objects of thepresent invention. toprovide ai device.' for this' purpose; whichLreferf't'o asia; blade: chopper..

Another object of the; presentzinvention. lies in theprovisionofiablade; chopper structure'. which severs the? double. edge: blade.along; a4 substantiallyrectilinearg-line pmrlucingf. two ysubstantiallyidentical cutting elements;

Another' object; herein. lies ini the provision of simple means for theprevention of the shift*- ing-inppositionoflthe blade prior to andduring the cutting operation.

In accordance'with-the'ibest operation of the device, the double edgesafety-` razor blade-may be more properly described as beingbrokenrather than cut since a true shearingA action in the blade chopper is"notv obtainedi The lack of a shearing action prevents' undesirable wearon'.

the bladebreakingelements so; that theyrn'aintainA a; substantially,uniform. shape and position, resulting; inY a. corresponding. uniformityofi the finished blade. elements..

Anotherobjectherein liesvk in: the provision of a .device 'ofthe .classdescribed. wherein a1- smooth and effective blade breaking action isobtained so that the blade breaks substantially instantanee ously with asnap.

A still further object lies in the arrangement and co-action of theparts whereby the device may be manufactured at relatively low cost andmay have a consequent wide sale and use.

These objects and other incidental ends and advantages will more fullyappear in the progress of this disclosure and be pointed out in .theappended claims.

In the drawings in which similar reference c h a r a c t e r s designatecorresponding parts i throughout the several views:

Figure 1 is a top plan View of an embodiment of." the .Y invention in apartially' opened. condition; Figure'l is a top plan View.` of r'Figure2.

Figure 2I is a side elevational view off the device as geen from thebottom of Figure 1.

Figure 3 isafront end' elevational View asseen from the.V right ofFigure 1.

Figure 4'- is'a longitudinal vertical sectional-view of theAdeviceshowing the parts atl' the inception ofthe bladek breaking`movement.-

Figure. is a plan view of a doubleledge razor blade after having beenbroken to form two blader elements;

In accordance with the invention they blade breaker or chopperindicated' generally byy reference character I'Il, includes a base I Ianda coverl'2 Y Thebasell is'pref'erably oblong inshapeand'is provided'-with a pair of uprights I3l and I4.' The uprights' I3 andy I4 arepreferably integrated with the base II by opposed pairs ofpins lwhichextendJv inwardly from thev outer' longitudinal side edges I 6 -andI'I-v to engage correspondingly positioned orifices in the lowerportions oiftheup-A rights I3 and: I 4'. The pluralA pins I5 preventrotationn ofthe' parts I'Sand I4, and said'uprightsl are given lateralsupport by being,positioned between slot's Ii and I9, which extendforwardly fromthe rear edge 20 of the base II.

Forwardlyof'the uprights I3 and I4 aA blade supportingtrough 2IYsubstantially U-shaped in cross-section; is` supported withinv atransverse groove 22 in the uppersurface 23 ofthe base III. The bladesupporting trough 2I is preferably composed of' metal suchl as' steeland the upper edges thereof 2'4 andV 2li' are' substantially flush withthe upper surface 23.1

Blade" locating' pins 26 and' 21 are disposed rearwardly and forwardly;4respectively, ofthe trough 21"v and they are laterally offset withrespect" to'each otherso that the distance between tli'em`issubstantially" equal toV the' distanceA between the pin engagingportions 28 and 29 of the blade slot 30. The position of the pins 26 and21 is preferably such that a double edge blade generally indicated byreference character 3! when engaged thereupon. will take the position findicated by the dot dash lines in Figure 1.

able about the pivot pin 38 which penetratesl aligned orifices in saiduprights and in the rear portion of the cover I2.

The blade chopping or breaking element 34 is preferably secured in atransverse slot 39 in the under surface 40 of the cover I 2 and is solocated that when the cover I2 is in the closed position thereof, thatis to say, with the under surface 49 in contact with the upper surfaceof the stop means 33, the element 34 will be disposed within the bladesupporting trough 2| with. the lowermost or cutting edgelll below theedges 24 and 25, a distance suilcient to distort the blade 3l thereatbeyond its elastic limit.

The operation of the present device is a relatively simple quick andconvenient matter. In order to break or chop the blade, it becomesnecessary only to place it in the position shown by the dot dash lineson Figure 1 and to bring the cover down arcuately about the pin 38 untilthe parts take the position shown in Figure 4. Further downward pressureupon the cover causes the blade to be distorted into the trough 2l whereit becomes severed along the edge 4l with a snapping action as the undersurface 49 abuts against the top surface of the stop means 33. Elevatingthe cover places the vnow severed blade cutting elements 50 andv 60 inclear view so that they may be removed easily without cutting the usersfingers. The cover I2 has a lever action and since the distance betweenthe element -34 and the pivot 38 is less lthan the distance between thefront edge 45 of the cover VI2 and the pivot 39, the mechanicaladvantage obtained enables a relatively light pressure to break along asubstantially predetermined line even the heavier types of razor bladeswith which the device is adapted to be used.

I wish it to be understood that I do not desire to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art'.

I claim: Y 1. A chopper for use in severing a razor blade of the doubleedge type, comprising: an elongated base having a transverse groove, atrough substantially U-shaped in section disposed Within said groove,the upper edges of said trough being substantially flush with the uppersurface of the base; a pair of locating pins projecting from said base,located on opposite sides of said trough, and

laterally offset in opposite directions from the longitudinal axis ofthe base so as to position the razor blade diagonally with respect tothe trough; a cover substantially coextensive with the base andpivotally connected at one end thereof to said base, overlying saidblade when the latter is in position on said locating pins; a bladesevering element projecting downwardly from the bottom surface of thecover and adapted in one position thereof to clearsaid trough and inanother position to lie within the trough between the vertical portionsthereof; and means disposed between the cover and the base to preventthe severing element from contacting the bottom of the trough; wherebydownward pressure on the cover breaks the razor blade along the line ofcontact of the blade severing element therewith, the severed parts beingretained in position by the cover.

2. A chopper for use in severing a razor blade of the double edged type,comprising: an elongated base having a transverse groove, a troughsubstantially U-shaped in section disposed within said groove, the upperedges of said trough being substantially iiush with the upper surface ofthe base; a pair of locating pinsprojecting from said base, located onopposite sides of said trough, and laterally offset in oppositedirections from the longitudinal aXis of the base so as to position therazor blade diagonally with respect to the trough; a cover substantiallycoextensive with the base and pivotally connected at one end thereof tosaid base, superposing said blade when the latter is in position on saidlocating pins; a-'blade severing element projecting downwardly from thebottom surface of the cover and adapted in one position thereof to clearsaid trough and in another position to lie within the trough between thevertical portions thereof; and adjustable stop means dis' posed betweenthe cover and the base, to prevent the severing element from contactingthe bottom of the trough; whereby downward'pressure on the cover breaksthe razor blade along the line of contact of the blade severing elementtherewith, the severed parts being retained in position by the cover.

HERMAN STOCK.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 861,724 Hillix July 30, 19072,208,165 Sheahan July 16, 1940 1,403,644 Scalbom Jan. 17, 1922 601,309Stevener Mar. 29, 1898 1,248,554 Scalbom Dec. 4, 1917 1,228,431 HansonJune 5, 1917

